prepare dnsdist for upcoming quiche updates

Hi,

For newer quiche version dnsdist needs some updated version detection.
Remove the explicit QUICHE_CFLAGS and QUICHE_LIBS from the Makefile,
they interfere with quich version detection and don't seem to be
needed anyway.

Note this affects the h3 flavor only.

OK?

-Otto

Index: Makefile
===================================================================
RCS file: /home/cvs/ports/net/dnsdist/Makefile,v
diff -u -p -r1.52 Makefile
--- Makefile 27 Mar 2025 04:55:38 -0000 1.52
+++ Makefile 28 Mar 2025 15:04:00 -0000
@@ -2,7 +2,7 @@ COMMENT= highly DNS-, DoS- and abuse-aw

DISTNAME= dnsdist-1.9.8
EXTRACT_SUFX= .tar.bz2
-REVISION= 1
+REVISION= 2

CATEGORIES= net

@@ -75,9 +75,7 @@ CONFIGURE_ARGS+= --with-libcrypto=${LOCA
CONFIGURE_ENV+= LIBSSL_CFLAGS="-I${LOCALBASE}/eboringssl/include \
-DDISABLE_OCSP_STAPLING" \
LIBSSL_LIBS="${LOCALBASE}/eboringssl/lib/libssl.a \
- ${LOCALBASE}/eboringssl/lib/libcrypto.a" \
- QUICHE_CFLAGS=" " \
- QUICHE_LIBS='-lquiche'
+ ${LOCALBASE}/eboringssl/lib/libcrypto.a"
BUILD_DEPENDS+= net/quiche \
security/boringssl/head
.else
Index: patches/patch-doh3_cc
===================================================================
RCS file: patches/patch-doh3_cc
diff -N patches/patch-doh3_cc
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ patches/patch-doh3_cc 28 Mar 2025 15:04:00 -0000
@@ -0,0 +1,15 @@
+Index: doh3.cc
+--- doh3.cc.orig
++++ doh3.cc
+@@ -751,7 +751,11 @@ static void processH3HeaderEvent(ClientState& clientSt
+ }
+
+ if (headers.at(":method") == "POST") {
++#if defined(HAVE_QUICHE_H3_EVENT_HEADERS_HAS_MORE_FRAMES)
++ if (!quiche_h3_event_headers_has_more_frames(event)) {
++#else
+ if (!quiche_h3_event_headers_has_body(event)) {
++